week 9- Elbow Flashcards
Name the joints located at the elbow
Radioulnar
Humeroulnar
Humeroradial
Name the tuberosity on the elbow
Olecranon
When is bony stability unlocked in the elbow
Once it flexes beyond 20 degrees of movement
What does the elbow unlocking allow
More Varuz and valgus laxity
What is stability in flexion provided by
Radial and ulnar collateral ligaments
Type of joint of radio-ulnar
Pivot
Describe movement of radioulnar joint
Radial head rotates around proximal ulna
Where does medial (ulna) collateral ligament attach
From medial epicondyLe of numerous to the coronoid and olecranon process of the ulna
What bone is olecranon located on
Ulna
Function of medial collateral ligament
Stability to the elbow during flexion
Resists varus stress to the elbow
Function of lateral collateral ligament
Stability to the elbow during flexion
Resists varus stress to the elbow
Location of lateral collateral ligament
From lateral epicondyle
To head of radius and annular ligament
Function of annular ligament
Provides a sling effect around radial head for stability
Flexors of the elbow
Biceps brachii
Brachialis
Brachioradialis
Extensors of the elbow
Triceps brachii
Anceneus
Supinators of the elbow
Supinator
Biceps brachii
Pronators of the elbow
Pronator teres
Pronator quadratus
Which muscle allows shoulder abduction
Deltoid
Which muscle allows wrist extension
Extensor
Which muscle allows finger abduction
Dorsal interossei
Which muscle allows finger adduction
Palmar interossei
Which muscle allows thumb abduction
Adductor pollucus brevis
Which muscle allows thumb adduction
Addductor pollucis
Location of capitellum
Inferiorly on humerous, most laterally
Location of trochlea
Inferiorly on humerous, most medially
Location of coronoid fossa
Superiorly to the trochlea, the indent
Location of radial fossa
Superior to thr capitellum
Location of coronoid process
Superior on ulna. Upward curve in middle
Location of radial notch of the ulna
Superior on ulna, where ulna middle curve meets the radius
Location of humeral shaft
Ridge on humerous (middle)